Answer:
Sun
Explanation:
I didnt quite got the question...But from fossil fules to wind energy....all these things are caused by Sun energy.
Answer:
An association between two organisms in which one benefits and the other derives neither benefit nor harm.
Explanation:
I believe that would be small polar and nonpolar molecules.
Hope it helps!
Earths lower atmosphere cools
Answer:
this study is clearly an observational work
Explanation:
experimental studies involve to establish direct associations between a traits and its phenotypic effects. For example, a classical experimental study would involve to map a nonsense mutation in the ACTN3 gene significantly correlated to the non-sprinting phenotype